Sprayer



y 8, 1934- J. w. PATTERSON 7,8 5

SPRAYER Filed Jan. 28, l933 2 Sheets-Sheet l May 8, 1934. J. w. PATTERSON SPRAYER Filed Jan. 28, 1933 2 Sheets-Sheet 2 Patented May 8, 1934 I srnAYER Joseph Walker Patterson, Tulsa, Okla., assignor to J. A. Vaughan Manufacturing Company, Tulsa, Okla'., a corporation of Delaware Application January 28, 1933, Serial No. 653,987 11 Claims. (01. 299-89) This invention relates to new and useful imwhich an example of the invention is shown, and provements in sprayers. wherein:

One object of the invention is to provide an Figure 1 is a side elevation of a sprayer conimproved sprayer for spraying various liquids, structed in accordance with the invention, such as insecticides, paints and lacquers, as well Figure 2 is a longitudinal sectional view of the 60 as oils and other fluids. s same, e

A particular object of the invention is to pro- Figure 3 is an enlarged sectional view of the vide a sprayer of the continuous-spray type, sprayer head, which may be made of comparatively few parts Figure 4 is a vertical sectional view taken on and of simple, as well as substantial construothe line 4-4 of Figure 3-, 65

'tion, whereby it will not only be inexpensive to Fi 5 i a per pec ive view of the disk havproduce andto maintain, but will be easy and ing the spray bracket attached thereto., simple to operate. e Figure 6 is a detail of the check valve,

A further object of the," invention is to provide Figure 7 is an enlarged view of the atomizing a sprayer which, while simple and highly efficient, tube partly in elevation and partly in section, 70 will operate without leaking and becoming messy; Figure 8 is a view of a plurality of atomizing and particularly one in which the nozzle will not tubes showing each having a different size slot 'drip, and wherein the nozzle will be self -draining, t re a d thus not only conducting surplus liquid back into Figure 9 is a plan view of the receptacle c pits head, but preventing the ejection of drops of In the dr w n s the num ral 10 designates a 75 liquids as well as clogg ng. sprayer barrel having a plunger 12 slidable there- Another object of the invention is to provide a A Plunger rod 3 has one end secured to the unique and substantial connection between the plunger and Said rod is Supported y d xt ds head and receptacle of the sprayer, whereby the ugh a cap 14 which closes one end of the head may be firmly seated in the cap of th r barrel. A suitable handle 15 is fastened on the 80 'ceptacle and a simple, inexpensive and convenut end of the d r p rat n t e plunger. i t t t r r d d, Although I have shown a manually operated An important, object of the invention is to prosprayer, it is to be understood that the iIIVGIItiOD. vide a removable atomizing or eduction tube and is 11011 to be limited o this Particular yp a simple and eflicient mounting for the tube, A cylindricalhefld 16,preferab1y made f brass, whereby the tube is not only efiectively held in or th n us or n iv ta is place in the nozzle, but is readily removable for P ed w a in egral collar 17 at its near cleaning and changing. end. Although it is preferable to make the head A further object of the invention is to provide of n us or non-corrosive ta t i t be 35 an atomiziiig or eduction tube co-acting with a understood h it can be d of a y u table 90 nozzle in such a manner as to control the quana ial. The collar 1'? is ofiset to form an tity and admission of air under pressure to the internal ShOllldBl 18'. This collar iS adapted to tube to promote the spray, and whereby fix d adfit around the forward end of the barrel l0(Figjustments may be had for fluids of different conures 2 and 3) and may be soldered, in y sistencies, by substituting tubes with correspondother suitable way scoured o- A d k 9, 95 air admitting Openings. which separates the interior of the barrel from the Still another object of the invention is to prohead, is confined between the shoulder 1 a vide a head of such size as to store an adequate the forward end of P barrel supply of under pressure, to maintain a com A tapered or conical nozzle 20 is positioned at tinuous Spray, as well, as a nozzle of simple and the forward end of the head 16 and is preferably 100 made integral therewith. It is noted that the ggz gig fzg ggfi ggg ggai g gg igi fifigz opening in the end of the nozzle is substantially small in proportion to the size of the interior of head thus maikmg mexpenslve manufactllrethe head 16. A suitable container, or receptacle, A designed out the 21 for receiving the liquid to be sprayed is pro- 105 vention will be hereinafter described, together Vided with an externally screw threaded collar with other feature? of the inventlo? or neck 22. A cap 23 iseadapted to screw onto T e inv W111 be more y understood the neck of the container to cover the same. A from 9- eadi o the following Specification a suitable packing gasket 24 is interposed betwee by e e e to t e ac ompa y raw g in the upper edgeof the neck and the cap. 11o

The cap provided with a die-metrical suing; in is top (Figures l 9). The sump conforms to the contour of the cylindrical head 16 and the head is positioned within said sump and is soldered; or in any other way suitably secured thereto, whereby the cap is permanently fastened to the underside of the bead. 'The cap has an opening 2c in its top which registers with an opening 27 in the head when the cap is secured thereto, as is clearly shown in Figure 3. 'lbus, tire openings 26 and 2? provide a communication between'tlie head 16 and the container 21.

An atomizing or eduction tube 28, preferably made of non-rusting or non-corrosive metal, is mounted within the bead and has its forward end resting against the inner wall of the nozzle 20. The tube is bent upon itself at substantially a right angle and an offset bend or crook 29 is provided at the intersection of the angular ends. The offset bend 29 engages in a slot 39 of a spring bracket 31 which is secured to the disk 19 and extends forwardly therefrom. is obvious that the spring bracket will hold the forward end of the tube 28 in position against the inner wall of the nozzle.

The slot to is of such length that the top or the tube rests against the upper edge of said slot (Figure 3) and the lower end of the ofiset bend 29 engages the bottom edge of the slot. With this arrangement spring bracket not only holds the forward end of the tube iirrnly against the inner wall the nozzle, but also prevents any vertical displacement oi said tube.

Tile lower end of the tube 28 depends through the opening 27 in the head and through the opening 26 in the can into the container 21, vliich carries the fluid to be sprayed. it is noted that the tube terminates short of the bottom of the container and does not rest on the same, but is supported by the engagement of the offset bend 29 in the slot 30. It is seen that the tube 28 forms a direct communication between the con tainer 2i and the outlet nozzle 2i A. check valve 32 is mounted on the disk 19 near the upper end of the same. The check valve is preferably made of non-rusting or non-corrosive metal and may be of any suitable con= struction. but as a manufacturing expedient, E prefer to utilize the valve as a means of attaching the spring bracket 31 to the disk. The valve includes a bead 33 and a tubular shank 34. The shank is inserted through an ear 31 on the upper end of the bracket and then through an aperture in the disk, so that the bead holds the bracket in place (Figures 3 and 6). The shank may be soldered, or secured in any suitable way, to tile dislr. The head is provided with a valve ball 35 which seats against the shank and which is retained witloin the bead by prongs 36, as is clearly shown in Figure 6. It is pointed out that air can pass from the barrel 10 into the head 16, but the check valve will prevent the same from passing from the head into the barrel.

The forward end of the atomlzing or eduction tube 28 is provided with slots 28'. "With the forward end of the tube in position against the inner wall of the nozzle 20, it is obvious that air escaping from the head must first pass the slots 28 and by varying the size of these slots, the amount of air emitting from the nozzle may be controlled.

In operation the forward stroke of the plunger 12 will force air from the barrel 10 through the check valve 32 and. into the head 16. Air in the head will pass downwardly through the openings 2e and 27 into the container 21 above the liquid. Thus, the only escape for the air from the head is through the slots 28 in the forward end of the eduction tube and out through the nozzle 20. The size of the head is such that a large air storage space is provided and since the opening in the nozzle is insumcient to allow all of the air forced into the head by one stroke of the plunger to immediately escape, an air pressure is built up within the head 16 and in the container 21 above the liquid. @ontinueil reciprocation of the plunger 12 will further build up the pressure whereby a continuous stream of air is ejected from the noz= zle Z0.

As the air pressure controls the amount of air emitting from the nozzle, it will also control the amount of fluid ejected through the tube, because tbe air pressure in the head 16 and in the container 21 will equalize itself. As the pressure is built up by continued reciprocation of the plunger 12, the air and liquid streams will be increased proportionately, tliereby providing periect atomization at all times.

varying the size or the slots 28 in the for= ward end of the tube 28, it is possible to further control the air emitting from the nozzle. It has beenfound that in spraying liquids, such. as gasoline, naphtha, and the like. which iiow freely, a small amount of air will sufice for perfect atomization. However, in spraying liquids, such as paint, it is necessary, because of their heavier consistency, to provide more air to attain perfect atomization. Tbereiore, it is to be understood that the slots 28' are not to be limited to any particular size or shape, as they may be varied to L obtain the best results.

The conical nozzle 20. besides forming a seat to position the forward end of the eduction tube 28, allows any fluid which may collect within the nozzle to drain back into the bead, thereby eliminating the ejection of drops of fluid after the sprayer has been operated. Also, the large air space around the end of the eduction tubeprevents clogging of the opening of the nozzle. "l'lie spring bracket 31 holds the tube 23 firmly in position but yet allows it to be easily removed or replaced.

Manufacturing costs have been reduced to a minimum as no machined parts are necessary. The head and nozzle are made of one piece which is a stamping and can be produced very cheaply. All parts vital to the operation of the device are made of non-rusting or nozi-corrosive material, thereby makin for longer use. The operation is positive, as there are no adjustments to be made.

The description which has been given recited more or less detail or a particular embodiment of the invention, which is set forth as new and useful, however, I desire it understood that the invention is not limited to such exact details of construction, because it is manifest that changes and modifications may be made within the scope of the appended claims without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent, is:

1. A sprayer comprising a receptacle, a cylindrical air storage head mounted on top of the receptacle, a nozzle extending from one end of the head, a disk closing the opposite end of the head, means for supplying air under pressure to the head, a bent eduction tube open at each end and extending upwardly from the lower portion of the receptacle into the headand forwardly through Mil the head to the nozzle, said tube terminating within the nozzle, and spring means mounted on the disk within the head for engaging the tube at the bend between its upwardly and its forwardly extending portions, for pressing its forward end into the nozzle.

2. A sprayer comprising a receptacle, a cylindrical air storage head mounted on top of the receptacle, a nozzle extending from one end of the head, a disk closing the opposite end of the head, means for supplying air under pressure to the head, a bent eduction tube open at each end and extending upwardly from the lower portion of the receptacle into the head and forwardly through the head to the nozzle, said tube terminating within the nozzle, and spring means mounted on the disk within the head for engaging the tube at the bend between its upwardly and its forwardly extending portions, for pressing its forward end into the nozzle, said air supply means including a check valve mounted in the disk and having a portion thereof engaging the spring means for holding it on the disk.

3. A sprayer comprising a receptacle, a cylindrical air storage head mounted on top of the receptacle, a nozzle extending from one end ofv the head, a disk closing the opposite end of the head, means for supplying air under pressure to the head, a bent eduction tube open at each end and extending upwardly from the lower portion of the receptacle into the head and forwardly through the head to the nozzle, said tube terminating within the nozzle, and spring means mounted on the disk within the head for engaging the tube at the bend between its upwardly and its forwardly extending portions, for pressing its forward end into the nozzle, said spring means having a slot in which the bend is engaged.

"iiii sprayer comprising a receptacle, a hollow air storage head mounted on top of said receptacle and having 'a conical nozzle at its forward end, means for closing the rear end of the head, means for supplying air under pressure to the head, a bent eduction tube open at each end extending from the lower portion of the receptacle through the head to the nozzle, and resilient means in the head for urging the forward end of the tube into engagement with the inner wall of the nozzle. the tube having a side opening within the nozzle for admitting air under pressure from the head.

5. A sprayer comprising a receptacle, a cap removably mounted on the receptacle, a cylindrical hollow head mounted on the cap, the cap and head having connected openings for establishing a passage therebetween, a conical nozzle integral with the front wall of the head, means for supplying air under pressure to the head and .receptacle, a bent eduction tube extending through the passage in the head and cap and having one end terminating in the lower portion of the receptacle, and means for urging the for ward end of the tube into the nozzle.

6. A sprayer comprising a receptacle, a cap removably mounted on the receptacle, a cylindrical hollow head mounted on the cap, the cap and head having connected openings for' establishing a passage therebetween, a conical nozzle integral with the front wall of the head, a barrel attached to the head, a plunger working in the barrel, a disk between the head and the barrel, a check valve mounted in the disk, a bracket mounted in the head, and a bent eductiontube extending through the passage in the head and cap having one end terminating in the nozzle and the other end terminating in the lower portion of the receptacle, said bracket having means engaging and supporting said tube at the bend\ & thereof.

7. In a sprayer, a receptacle, a cylindrical air storage head mounted on top of the receptacle, a conical nozzle integral with the front wall of the cylinder having an opening in its tip, a disk closing the rear end of the head, a. bent eduction tube open at each end and extending upwardly from the lower portion of the receptacle into the head and forwardly through the head to the nozzle, and spring means mounted on the disk within the head engaging the tube at itsbend and urging the forward end of the tube into the tip of the nozzle. V

8. In a sprayer, a cylindrical air storage head, having a conical nozzle formed integral with the front wall thereof, a liquid storage receptacle suspended from the storage head, a removable bent tube having one leg extending through the air storage head and the other leg dipping into the liquid storage receptacle, and resilient means mounted within the head engaging the tube at its bend and urging the forward end thereof into the tip of said nozzle,

9. In a sprayer, a barrel having a plunger working therein, a cylindrical air storage head fitted to the end of the barrel, said storage head having a conical nozzle formed integral with the forward end thereof, a liquid receptacle suspended from the storage head, a removable bent tube open at each end and having one leg extending into the liquid storage receptacle and the other into the air storage head, a disk separating the air storage head from said barrel, a check valve mounted on said disk, and a spring bracket also mounted on said disk and having a slot therein, the bend of said tube fitting into said slot, said bracket having a portion pressing against the first-mentioned leg, whereby the forward end of the eduction tube is urged into the tip of said nozzle.

10. In a sprayer, an air pressure chamber having a nozzle at the forward end thereof, a liquid receptacle located beneath the air storage chamber, a bent eduction tube open at each end and extending upwardly from the lower portion of the receptacle into the air pressure chamber and forwardly through the chamber to the nozzle, said tube having an upright leg provided with a rearwardly offset portion thereabove, and means bearing against thetube at the base of said rearwardly offset portion for supporting the tube in operative position and holding its forward end firmly in said nozzle.

11. In a sprayer, a receptacle, a cylindrical head mounted on top of the receptacle enclosing an air pressure chamber, a nozzle at the front portion of the cylinder, a bent eduction tube open at each end and extending upwardly from the lower portion of the receptacle into the air pressure chamber in the head and forwardly through the chamber to the nozzle, and guiding and supporting means for said tube within said head, said tube having an upright leg provided with a rearwardly offset portion thereabove, and said guiding and supporting means includ- 5 ing a slotted portion coacting with the rearwardly offset portion of the upright leg.

JOSEPH WALKER PATTERSON. 

